cobalt 60 cobalt • cobalt bloom · · · Info · Definitions · Characters · · cobalt 60 · · Text Common · · Latin · · Scripts 9 · · Length 4 · · Syllables Definitions · · · (noun) a radioactive isotope of cobalt with mass number 60; a source of exceptionally intense gamma rays; used in radiation therapy. Synonyms: cobalt 60. · · Noun Definition 1 Characters · · space U+0020 0 digit zero U+0030 6 digit six U+0036 a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 l latin small letter l U+006C o latin small letter o U+006F t latin small letter t U+0074